Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5294340 | Process for the biological treatment of waste water using microorganisms | — | 1994-03-15 |
| 4647342 | Lightweight flexible coke oven door with pressure-balancing lever system | Wilhelm Stog | 1987-03-03 |
| 4647343 | Self sealing coke oven door of lightweight construction | Wilhelm Stog | 1987-03-03 |